#2F575F
Closest named color: Dark Slate Gray (#2F4F4F). oklch(43.1% 0.047 212), rgb(47, 87, 95).
Aa
White text reads best on this color (7.92:1).
About this color
#2F575F is a dark, muted teal or cyan. In OKLCH its lightness is 43%, its chroma 0.047 and its hue 212°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.032 away. White text reads best on it, at 7.92:1.
| Hue family | Teals and cyans |
| Lightness | dark (43%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.64:1 |
| White text | 7.92:1 |
Values
| HEX | #2F575F |
| RGB | rgb(47, 87, 95) |
| HSL | hsl(190, 34%, 28%) |
| OKLCH | oklch(43.1% 0.047 212) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #2F575F | 7.92:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #2F575F | 2.64:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #2F575F text on white | 7.92:1 | AAA | Lc 87.4 | Fine for body text |
| #2F575F text on black | 2.64:1 | Fails | Lc -14.7 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 800.
-
Step 50
50
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBED
oklch(93.5% 0.008 216.6)
-
Step 200
200
#CEDCDF
oklch(88.5% 0.016 212)
-
Step 300
300
#ADC6CB
oklch(80.9% 0.028 211.1)
-
Step 400
400
#81A8B1
oklch(70.6% 0.044 213.4)
-
Step 500
500
#60939D
oklch(63.1% 0.056 211.3)
-
Step 600
600
#467D88
oklch(55.6% 0.061 212)
-
Step 700
700
#376973
oklch(49% 0.056 212.1)
-
Step 800
800 (this color)
#2F575F
oklch(43.1% 0.047 212)
-
Step 900
900
#2A474D
oklch(37.8% 0.036 212.2)
-
Step 950
950
#192A2D
oklch(27.1% 0.023 209.7)
#2F575F with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #50545F | 0.043 |
| Deuteranopia (no green cones) | #494F5F | 0.040 |
| Tritanopia (no blue cones) | #165A59 | 0.026 |
| Achromatopsia (no color) | #515151 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F575F
#2F575F
oklch(43.1% 0.047 212)
- #674740
#674740
oklch(43.1% 0.046 32.7)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #2F575F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.032
- Petrol #005F6A ΔE 0.033
- Deep Teal #00555A ΔE 0.033
- Dark Green Blue #1F6357 ΔE 0.046
- YInMn Blue #415A77 ΔE 0.047
- Dark Blue Green #005249 ΔE 0.053
- Dark Teal #014D4E ΔE 0.055
- Dark Aqua #05696B ΔE 0.055
Use #2F575F in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.